Background support stand



FIG. 1 is a first perspective view of a background support stand showing my new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is another perspective view thereof, shown in a state of use;

FIG. 10 is an enlarged view of the selected portion 10 in FIG. 1 ;

FIG. 11 is an enlarged view of the selected portion 11 in FIG. 1 ;

FIG. 12 is an enlarged view of the selected portion 12 in FIG. 2 ; and,

FIG. 13 is an enlarged view of the selected portion 13 in FIG. 2 .

The dash-dash broken lines in FIG. 9 depicting a background illustrate environmental subject matter that forms no part of the claimed design. The remaining dash-dash broken lines depict portions of the background support stand that form no part of the claimed design. The long dash-short dash broken lines in FIGS. 1-2 and 10-13 depict the boundaries of the enlargements and form no part of the claimed design. 

CLAIM The ornamental design for a background support stand, as shown and described. 